When geologists want to study an active earthquake fault, they often rely on a trenching study. ... They brace the walls, if needed, to prevent cave-ins, then they climb down into the trench and carefully map its walls, looking for signs of past earthquakes and ground movement.
Structure I hope is the right answer
Answer:
when there isnt a exponet you immiedentally make a number 1
Explanation:
Answer: earth science is made of many branches of knowledge concerning all aspects of the earth system
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